ASTROSAT CZTI

Data Quality Report

Orbit 20191225_A08_009T01_9000003390_level2

Creation date: 2019-12-31T10:58:57.271661
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A08_009T01_9000003390cztM0_level2_bc.evt modeM0/AS1A08_009T01_9000003390cztM0_level2_quad_clean.evt
Size (bytes)5,475,836,1602,052,921,600
Size5.1 GB 1.9 GB
Events in quadrant A29,240,12913,451,486
Events in quadrant B30,378,11913,726,120
Events in quadrant C29,556,02413,110,155
Events in quadrant D67,136,26812,308,460

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028500
B028500
C028500
D028500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02882890
B02925300
C02941390
D04243590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13993212180.870423%
B13993115681.120552%
C13993121661.547906%
D139931123938.856508%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 167671 139936 8 8 0.00% 0.01%
B 167671 139934 60 60 0.04% 0.04%
C 167671 139934 22 22 0.01% 0.02%
D 167671 139922 3081 3081 1.84% 2.20%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 170 483977 293.53 7372 7244 1624.2
A 14 238 287627 172.63 7372 7244 1624.2
A 13 254 220159 131.09 7372 7244 1624.2
B 0 190 560989 396.03 7434 7257 1398.2
B 4 216 496215 349.7 7434 7257 1398.2
B 0 189 354181 248.12 7434 7257 1398.2
C 0 10 1659692 987.96 7078 7048 1672.8
C 7 247 322956 188.85 7078 7048 1672.8
C 0 239 169441 97.08 7078 7048 1672.8
D 1 52 25823148 15714.12 6966 6726 1642.9
D 7 238 4424208 2688.86 6966 6726 1642.9
D 13 172 3286714 1996.49 6966 6726 1642.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter